Signal processing device
First Claim
1. A signal processing device comprising:
- a plurality of resistance type sensors configured to detect predetermined physical quantities, and having resistances varying depending on the physical quantities;
a detection circuit forming unit configured to select two or more predetermined resistance type sensors different for each time period from the plurality of resistance type sensors, and to form a predetermined resistance detection circuit including the two or more resistance type sensors that have been selected;
a measuring unit configured to sequentially receive output signals from the resistance detection circuit that has been formed; and
a computing unit configured to carry out an operation of linearly combining the output signals sequentially output from the measuring unit to compute the physical quantities,wherein the detection circuit forming unit is configured to form a circuit configured to convert output signals of the two or more predetermined resistance type sensors that has been selected into a voltage signal, andwherein the two or more resistance type sensors that have been selected are sensors that simultaneously detect either physical quantities of two or more axes orthogonal to each other or two or more types of physical quantities and change resistances depending on detected values.
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Abstract
There is provided a signal processing device comprising a combination unit (3) configured to combine plural element signals based on plural physical quantity signals including signal components in accordance with desired physical quantities, respectively, by the number of times equal to or greater than a number of the plural physical quantity signals, and to output combined signals different from each other; a measuring unit (4) configured to sequentially receive the combined signals output from the combination unit (3); and a computing unit (5) configured to compute signal components based on the desired physical quantities from signals that are generated based on the combined signals sequentially output from the measuring unit.
13 Citations
10 Claims
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1. A signal processing device comprising:
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a plurality of resistance type sensors configured to detect predetermined physical quantities, and having resistances varying depending on the physical quantities; a detection circuit forming unit configured to select two or more predetermined resistance type sensors different for each time period from the plurality of resistance type sensors, and to form a predetermined resistance detection circuit including the two or more resistance type sensors that have been selected; a measuring unit configured to sequentially receive output signals from the resistance detection circuit that has been formed; and a computing unit configured to carry out an operation of linearly combining the output signals sequentially output from the measuring unit to compute the physical quantities, wherein the detection circuit forming unit is configured to form a circuit configured to convert output signals of the two or more predetermined resistance type sensors that has been selected into a voltage signal, and wherein the two or more resistance type sensors that have been selected are sensors that simultaneously detect either physical quantities of two or more axes orthogonal to each other or two or more types of physical quantities and change resistances depending on detected values. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A signal processing device comprising:
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a plurality of resistance type sensors configured to detect predetermined physical quantities, and having resistances varying depending on the physical quantities; a detection circuit forming unit configured to select two or more predetermined resistance type sensors different for each time period from the plurality of resistance type sensors, and to form a predetermined resistance detection circuit including the two or more resistance type sensors that have been selected; a measuring unit configured to sequentially receive output signals from the resistance detection circuit that has been formed; and a computing unit configured to carry out an operation of linearly combining the output signals sequentially output from the measuring unit to compute the physical quantities, wherein the plurality of resistance type sensors includes four resistance type sensors, wherein the four resistance type sensors have output characteristics of satisfying Δ
R1=X+Z, Δ
R2=X−
Z, Δ
R3=Y+Z, and Δ
R4=Y−
Z, where X, Y, and Z are the physical quantities of three axes perpendicular to one another and Δ
R1, Δ
R2, Δ
R3, and Δ
R4 are change amounts output from the four resistance type sensors, andwherein the detection circuit forming unit forms four resistance detection circuits satisfying V1=Δ
R1+Δ
R3, V2=Δ
R3−
Δ
R2, V3=Δ
R2+Δ
R4, and V4=−
Δ
R4+Δ
R1, where V1, V2, V3, and V4 are outputs from the four resistance detection circuits.
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Specification